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Campfire Audio

Fathom - Premium In Ear Monitor

Fathom - Premium In Ear Monitor

Regular price $1,049.00 USD
Regular price Sale price $1,049.00 USD
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Fathom by Campfire Audio is an earphone made for audiophiles. Six custom-made balanced armatures deliver a detailed presentation with just the right touch of mid-band warmth that elevates vocal performance and offers a glowing musical experience.  

Fathom is encased in a machined aluminum body anodized in a sleek, black, bright-dip.  The Rainbow PVD fasteners cast a vibrant spectrum of light against the deep black of the anodized shell, creating a striking contrast that is both visually captivating and elegantly understated.

Fathom is meticulously designed and assembled in Portland, Oregon, USA.

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Experience the culmination of nearly a decade of experience in the tuning and refinement of an all-balanced armature IEM. Fathom takes the long legacy of Campfire’s world-class precision and technical performance to its peak with our new six-B.A. internal architecture. 

Utilizing a new dual mid-driver assembly, Fathom creates astounding richness, texture, and elevation to vocal performance, sharing every emotive detail from the artist to the listener. Paired with custom dual low and high balanced armature, Fathom offers top-to-bottom precision, detail, and resolution. 

The goal of Fathom’s design is to provide a sound that is true to the original recording, allowing you to hear your music with clarity and depth. By focusing on the accuracy and detail of each note, from the lowest bass to the highest treble, we aim to bring you closer to the music you love. This approach ensures a listening experience that is both immersive and authentic, suitable for a wide variety of musical genres.

This precision and detail oriented sonic approach is mirrored externally by Fathom’s sleek, ergonomic machined aluminum housing. A re-engineering of our classic faceted aluminum housing, this shell offers incredible ergonomics, resilience, and style. Fathom’s sleek, black bright-dip anodizing is contrasted with its rainbow PVD fastener rings and MMCX capture, giving it a touch of bold excitement. 

Dive into the depths of Fathom’s incredible balance, soundstage, resolution, and detail. 


Expansive Soundstage: Immerse yourself in a live concert experience wherever you go.

Vivid Sound: Hear your music in rich, new vibrant tones that bring every track to life.

Effortless Connectivity: Plug into any device with ease and experience pure, uninterrupted sound with the 3 Time Stream Metal cables.

Luxury On-the-Go: Carry a touch of elegance with our handcrafted leather case, a statement of style.

Sonic Craftsmanship: Feel the passion for precision in every note with earphones crafted for the purest audio journey.

What's In The Box

  • Fathom - Premium earphone crafted with care by Campfire Audio
  • Time Stream Cables - Black - Eight silver plated copper conductors in ribbon configuration - 3.5mm / 4.4mm Terminations Included
  • Select Case; Handmade Leather 'Dimensional Folding' Case
  • Breezy Bag Junior - Small mesh zipper case
  • Breezy Bag Micro - Two-pocket IEM pouch
  • Earphone Tips: Marshmallow and Silicon - Various Sizes

Tech Specs

Frequency Response: 5Hz–20 kHz

SPL: 94 dB @ 1 kHz: 6.75 mVrms

Impedance: 11.7 Ohms @ 1 kHz

Less than 1% Total Harmonic Distortion

New Six-Balanced Armature Architecture

Fathom is equipped with six custom-made balanced armature drivers, each designed with a specific role in mind to enhance your listening experience. The configuration includes dual custom high-definition super tweeters for crisp, clear highs; a pair of custom mid-range drivers for accurate vocal and instrument reproduction; and dual custom BA woofers for rich, balanced bass. This setup is meticulously engineered to deliver precise sound reproduction across the entire frequency range.

Phase Harmony Engineering

At Campfire Audio, our philosophy regarding driver treatment informs a considered approach that emphasizes quality over quantity. In the arms-race to fit a higher and higher number of drivers into an earphone, we find that a results-driven technique to driver treatment produces superior results with less room for pitfalls and ever-expanding variables that can undermine product consistency. 

One of the products of this approach is our Phase Harmony Engineering, that allows us to segment the frequency spectrum and assign these segments to specific drivers, and allows those drivers to apply their strengths to that area. But it doesn’t end there, using a combination of precision engineered driver housings and shell geometry, coupled with custom damping values we are able to physically shape the tuning and response of the drivers, and further, their interaction with one another. This driver-to-driver interaction is crucial to eliminating points of potential phase cancellation and creating the intangibles that don’t show on a frequency response curve; imaging, separation, resolution, and soundstage. 

  • Peak Perfomance

    Fathom is precision engineered inside-and-out by the same engineering team that has brought you all Campfire IEMs for years. Leveraging our many in-house designs and advancements, Fathom is the new standard bearer for the all-BA branch of our IEM evolution.

  • Tuned With Intention

    This curve displays relative volume levels at each point across the frequency spectrum, reflecting Fathom's careful balance and refinement in tuning. Though FR curves are a great general guide, they can't convey technicalities like soundstage, imaging, layering, etc.

  • "Fathom represents an evolution of the Andromeda formula that feels highly familiar yet changed in a meaningful way that earns the new title. The same beloved traits are apparent; that being a warm, rich bass, articulate midrange, and detail-forward treble. However, they are now enhanced with a much cleaner background and more accurate imaging alongside a more authentic treble instrument portrayal."

    - Ryan Soo, Everyday Listening
    Full Review 
  • "[Fathom] gives you a very nice weight to the music, especially in the midrange, and the treble is sparkly and highly detailed... It is now the most universal offering from the brand.

    Considering its beautiful design and build quality, married with a sound that is engaging yet polished and easy to listen to, the Fathom has everything it takes to become the new bestseller from CFA."

    -Paweł Szachno, Ear Fidelity
    Full Review 
  • "The Campfire Audio Fathom is a very balanced-sounding BA IEM with a natural, agreeable lilt to its sound signature combined with excellent vocal presence and impressive imaging. 

    Arguably, this is ‘next level’ Andromeda at ‘same level’ pricing."

    - Marcus, Headfonics
    Full Review 
  • Fathom is complimented by two included Time Stream Cables, both a 3.5mm Stereo termination and a balanced 4.4mm terminated cable. Time Stream Cables feature eight silver-plated copper conductors in a ribbon configuration that offers superb ergonomics and low microphonics. 

    A Dimensional Folding leather carrying case, hand-made by our good friends in Portugal, provides convenient and easy-to-use storage for your earphones and cables while on the go.  A rainbow PVD carabiner offers additional functionality while referencing the understated details of the Fathoms fasteners.